Terms and conditions

of DCEM - Die CE-Mentoren
Dr. Ostermann & Partner Ingenieure

This translation is not legally binding and only for information purposes.

The legally binding text is the German version.

You can find the original version here.

Contract language

The contract language is German.

scope of application

  1. Die DCEM - Die CE-Mentoren Dr. Ostermann & Partner Ingenieure,
    Auf dem Senkel 40,
    53859 Niederkassel,
    Internet: www.cementor.de,
    hereinafter referred to as "engineers",
    write expert reports, comments, specialist publications, develop tools, give lectures and create concepts for events.
    The engineers also operate the websites cementor.de, ce-mentor.de, ce-mentor.com (hereinafter referred to as "website"), on which the engineers are represented. 
  2. The subject matter of these general terms and conditions (hereinafter referred to as "GTC") are, on the one hand, the relationships between engineers and customers (hereinafter referred to as "customer") within the scope of their activities.  
  3. By commissioning the engineers, the customer accepts these GTC. These GTC are part of every contract for the use of the services offered in "scope of application" 1, 2 and 4.
  4. All assignments for
    - Expert evidence
    - Commentaries
    - Publications
    - Development of Tools
    - Presentations
    - Concepts 
    - Visits to the websites
    are covered by these GTC.
  5. Conditions of the customer that deviate from these GTC do not apply, even if the engineers do not expressly contradict them. Changes and additions to these terms and conditions require the express written consent of the engineers. Oral promises and side agreements require written confirmation by the engineers to be effective. 


The invoice amount must be transferred to the account given with the invoice within 14 days of the invoice being issued. 


Papers and documents created by the engineers (hereinafter referred to as "documents") are protected by copyright law. With the exception of personal, non-commercial use in the context of events, rights of use are only transferred by expressly granting rights of use in writing. The documents may not be reproduced, distributed or published without our consent.

Privacy Policy
(German Datenschutz)

Unsere Datenschutzerklärung finden Sie hier.
Here you can find our Privacy Policy.


  1. The engineers are not liable for the correctness and completeness of the information in the documents and on the website. They neither expressly nor tacitly guarantee that the information provided is suitable for any purpose, nor that it is able to fulfill a certain function, nor that it is correct or up-to-date. The same applies to all other websites that are referred to by hyperlinks. The engineers are not responsible for the content of the websites that can be reached through such a link.
  2. The engineers are only liable for damage - for whatever legal reasons - in the event of
    - willful intent,
    - gross negligence on the part of the owner / organs,
    - culpable injury to life, body or health,
    - in the event of fraudulent concealment of a defect,
    - insofar as, according to the Product Liability Act, they are liable for personal injury or property damage to privately used goods. 
In the event of a breach of contract, the engineers' liability is limited to the amount of the engineers' insurance. Liability for atypical, unforeseeable damage and indirect damage or consequential damage of any kind, such as lost profit, is excluded, unless liability is mandatory as described above. Liability of the engineers for damage caused by computer viruses, espionage programs and other harmful computer programs is also excluded. 

Widerrufsrecht bei Verbrauchern
(German version only)

  1. Widerrufsrecht
    Sie haben das Recht, binnen vierzehn Tagen ohne Angabe von Gründen diesen Vertrag zu widerrufen. Die Widerrufsfrist beträgt vierzehn Tage ab dem Tag des Vertragsabschlusses.
    Um Ihr Widerrufsrecht auszuüben, müssen Sie uns
    DCEM - Die CE-Mentoren Dr. Ostermann & Partner Ingenieure, Auf dem Senkel 40, D-53859 Niederkassel,  E-Mail: ostermann@cementor.de
    mittels einer eindeutigen Erklärung (z. B. ein mit der Post versandter Brief, Telefax oder E-Mail) über Ihren Entschluss, diesen Vertrag zu widerrufen, informieren.
    Sie können dafür das beigefügte Muster-Widerrufsformular verwenden, das jedoch nicht vorgeschrieben ist. Zur Wahrung der Widerrufsfrist reicht es aus, dass Sie die Mitteilung über die Ausübung des Widerrufsrechts vor Ablauf der Widerrufsfrist absenden.
  2. Folgen des Widerrufs
    Wenn Sie diesen Vertrag widerrufen, haben wir Ihnen alle Zahlungen, die wir von Ihnen erhalten haben, einschließlich der Lieferkosten (mit Ausnahme der zusätzlichen Kosten, die sich daraus ergeben, dass Sie eine andere Art der Lieferung als die von uns angebotene, günstigste Standardlieferung gewählt haben), unverzüglich und spätestens binnen vierzehn Tagen ab dem Tag zurückzuzahlen, an dem die Mitteilung über Ihren Widerruf dieses Vertrags bei uns eingegangen ist.
    Für diese Rückzahlung verwenden wir dasselbe Zahlungsmittel, das Sie bei der ursprünglichen Transaktion eingesetzt haben, es sei denn, mit Ihnen wurde ausdrücklich etwas anderes vereinbart; in keinem Fall werden Ihnen wegen dieser Rückzahlung Entgelte berechnet.

    Wir können die Rückzahlung verweigern, bis wir die Waren wieder zurückerhalten haben oder bis Sie den Nachweis erbracht haben, dass Sie die Waren zurückgesandt haben, je nachdem, welches der frühere Zeitpunkt ist.

    Sie haben die Waren unverzüglich und in jedem Fall spätestens binnen vierzehn Tagen ab dem Tag, an dem Sie uns über den Widerruf dieses Vertrags unterrichten, an DCEM - Die CE-Mentoren Dr. Ostermann & Partner Ingenieure, Auf dem Senkel 40, D-53859 Niederkassel zurückzusenden oder zu übergeben. Die Frist ist gewahrt, wenn Sie die Waren vor Ablauf der Frist von vierzehn Tagen absenden.
    Wir tragen die Kosten der Rücksendung der Waren.

    Haben Sie verlangt, dass die Dienstleistungen während der Widerrufsfrist beginnen soll, so haben Sie uns einen angemessenen Betrag zu zahlen, der dem Anteil der bis zu dem Zeitpunkt, zu dem Sie uns von der Ausübung des Widerrufsrechts hinsichtlich dieses Vertrags unterrichten, bereits erbrachten Dienstleistungen im Vergleich zum Gesamtumfang der im Vertrag vorgesehenen Dienstleistungen entspricht.


The engineers reserve the right to change these GTC if necessary, in particular due to changes in the law or other legal requirements. If such a change restricts the rights of the participant / user granted therein, he / she will be informed of the changes beforehand and the user has an extraordinary right of termination. 

Place of fulfillment; Place of jurisdiction and applicable law 

  1. The place of fulfillment is the registered office of the engineers.
  2. If the participant / user is a businessman, the registered office of the engineers is the place of jurisdiction. However, the engineers are entitled to sue at the headquarters of the participant / user.
  3. The law of the Federal Republic of Germany is to be applied. 

Storage/Saving of the contract text 

The contract text is saved. The customer has no access to the text of the contract via the Internet.

The contract text is also communicated to the customer in text form in the order confirmation so that the contract terms can be called up, printed out or saved in a reproducible form.

The general terms and conditions of the engineers can be viewed on the website http://www.cementor.de/agb.html. You can print out or save this document by using the usual function of your Internet browser ("Save as" or "Print"). 

Statutory warranty law and warranty law 

The legal warranty right applies. This means in particular that the engineers will remedy all defects that are subject to the statutory warranty obligation free of charge in the first two years after delivery of the goods.

Claims for damages are excluded unless essential obligations have been violated, damage has not been caused intentionally or with gross negligence and unless there is injury to life, limb or health.

Subject to the preceding paragraphs, the engineers assume no liability for the topicality, correctness and completeness of the products to be delivered. 

Severability clause

  1. Should individual provisions of these GTC be ineffective or unenforceable or become ineffective or unenforceable after the conclusion of the contract, the validity of the rest of the contract remains unaffected.
  2. The ineffective or unenforceable provision shall be replaced by an effective and enforceable provision whose effects come as close as possible to the economic objective pursued by the contracting parties with the ineffective or unenforceable provision. The above provisions apply accordingly in the event that the terms and conditions prove to be incomplete. 


The Version of these GTC is 20.12.2021


DCEM - Die CE-Mentoren
Dr. Ostermann & Partner Ingenieure
Auf dem Senkel 40
53859 Niederkassel
NRW, Deutschland


Email: ostermann@cementor.de 
Tel.: +49 (0) 2208 5001882
Fax: +49 (0) 2208 5001883

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